Answer:
Work done by the gas for the given volume and pressure pounds foot
Explanation:
Given
Pressure applied pounds per square foot
Initial Volume cubic feet
Final Volume cubic feet
As we know pressure is inversely proportional to V
where k is the proportionality constant
V is the volume and
P is the pressure
Work done
Integrating the above equation, we get-
Work done by the gas for the given volume and pressure pounds foot
Answer:
The green car traveled a shorter distance, but the displacement of the cars was equal.
Explanation:
Centripetal acceleration is given as
here we know that
v = speed of the car
R = radius of curvature of the car
now here we can see that the acceleration of car directly depends on the square of the speed
so here if speed of the car is tripled then centripetal acceleration will be increased by square times
so here centripetal acceleration is increased by 9 times if speed is tripled
Answer:
We assume the second train was standing still and that momentum is conserved.
Then the product of mass and velocity before the collision is
(5000 kg)·(100 m/s) = 500,000 kg·m/s.
After the collision, where M is the mass of the second train, the momentum is
((5000+M) kg)·(50 m/s) = 500,000 kg·m/s
Dividing by 50 m/s and subtracting 5000 kg, we have
(5000 +M) kg = 10,000 kg
M kg = 5000 kg
The mass of the second train is 5000 kg
Most white dwarfs are hotter than most giant starts and the reason why is because they are very dense, and because they are so dense that's why they are so hot.